School of Physics and Optoelectronic Engineering;
Xidian University;
Xi'an 710071;
People's Republic of China;
Advanced Interdisciplinary Technology Research Center;
National Innovation Institute of Defense Technology;
Beijing 100071;
People's Republic of China;
Key Laboratory of Physical Electronics and Devices;
Ministry of Education;
Xi'an Jiaotong University;
Xi'an 710049;
People's Republic of China;
School of Sciences;
Xi'an University of Technology;
Xi'an 710054;
People's Republic of China;
air breakdown; plasma; ionization; high-power microwave; plasma fluid equations;